Jawapan

2015-07-09T03:24:38+08:00
Hello Yunos940,

The question is quite general. Energy here can mean hydraulic energy, solar energy or even electric energy. Each of this energy plays important role in the universe. For example, solar energy is really cost saving, it can heat a water tank and supply hot water to the community. Same goes with hydraulic energy, it can supply water using a specific system to the water detention area.